Substation-protector.



No- 842,628. PATENTED JAN. 29, 1907. F. B. 000K. SUBSTATION PROTECTOR.

APPLICATION FILEi'J-MAR. 1'2, 1906.

Wiine'sses: Inreyziar:

i No. 342,628.

FRANK B. oooK, F oHIoiieo, ILLINOIS.

SUBSTATlON-PROTECTOR.

Specification of Letters Patent. I

Patented Jan. 29, 1907.

Application filed March 12, 1906. Serial No. 305,599.

. 'l iof'all it may concern.- Be it known that I, FRANK B. 000K, a citizenof the United States of America, residing I 1 a hi at Chicago, in the county of Cook and State of Illinois, have invented new and useful'Improvements in Substation- Protectors, of which. the following'is a specification, refer- -*ence being had to the accompanying drawing same.

Inga, illustrat y lnvention relates, to a protector co1n' vprismg a number of protective devices of diferent character aganged to protect an electric'al circuit and the apparatus thereof from all formsofinjurious currents or charges of electricity. v i ,1 The principal object of my invention is to 1 lOVldB a compact, durable, re'aiiily-accessihly-eflicient arrangement of the parts of sue a device by which/electrical circuits andapparatus may be protected from strong currents, sneak-currents, and high- ;voltage currents or charges',.j'such as lightin adapte ning, the said arrangement be g for use in various circuits and under various conditions. vProtectorsof thisfcharacter generallyin use protect electrical ,circuits and -apparatus against only one for-two forms of .mjurious currepts; butit is very essential to rotect certain'instruments and apparatus rom all of the different forms of injurious currents or charges at the same time. One

instrument in articular which needs protection from all onus of electric currents not intended" for its use is the telephone, and I have adapted the arrangement of this present invention more particularly. for use in this connection. h-

. In the accompanying drawings, illustrating the preferred form of my invention, Figure 1 is a side elevation of the device of the invention.., Fig. 2 is a plan view of Fig. 1. Fig. 3

is a cross-section of a portion of the device of --portions shown in elevation.

- Gare viewsv showin details of springs p and severalfigures.

the invention, taken on line C D of Fig. 2, with portions shown in elevation. Fig. 4 is a cross-sectionof a portion of the device of the invention, taken on line A B of Fig. 2, with Figs. 5 and g respectively, as s own in Fig. 1. 0 '2 Like characters refer to like parts in the The tubular fuses c 0, 1i htning-arresters mm, and heat-coils s s are a] suitably mounted on the insulatin -base a preferably of porcelain,- by suitab e contact springs. Betweenthe fuses c c is a rib b, of insulating material, preferably a part of the base a, adapted to prevent an are from j u'mp-ing between conducting portions on opposite sides there- The glass cover Z, provided with ears 'v c at its base, is placed over the lightning-arresters m m and thermal protectors s s and is preferably held in place by lugsa 'u, and spring-catch 0, as shown, so as to completely inclose the protective devices, and thereby prevent dust and foreign particles from accumulating thereupon and also prevent the danger occasioned by conducting parts and combustible substances coming in contact with the said devices during their operation or upon the passage of a high-potential current or discharge through a lightning-arrester.

Each spring is secured to base a by a bolt n, is provided with a curved portion is, adapted to automatically clamp one end of the fuse c in place, and with a narrow tongue portion 9, adapted to fit in a groove of a lightning-arrester m to hold same in.

place. Each spring 9 is secured to base a. by a bolt h and is adapted to automatically clalnp one end of the fuse in place when same is inserted therein. When fuse c is put in place, one spindle e thereof is first inserted through two holes in spring 7:, and then the other spindle e is depressed into a slot in spring 9. Spring is exerts a torsional stress on its spindle e, which clamps same to sprin 7c and gives an end thrust to the fuse c, an

thereby causes same to make good contact between an end cap d and the spring 9, which latter spring also grips the spindle e in a slot to assist in clamping the fuse in place. The action of these clamping-springs 7c and g on the fuse is described and claimed in my Patent No. 802,736, on electric fuse. Each spring y is held in place by a bolt 92. and is adapted 'at its free end to carry a heat-coil s. The base a is cut away, as at y,, to accommodate spring y, which is ccnductively connected with spring is. The base a is preferably provided with a transverse rib a, and, posts w contiguous therewith to prevent surface leakage between .the conducting parts, each post a; being cut away to accommodate a spring y, as shown in Fig. 3. The

ground-spring Q lS mounted on rib w,"by:

bolt 1 and is provided with narrow portions g g, each adapted to fit in a groove in a lightning-arrester, and thereby hold same in place. Eachportion g of spring g, is bent, as at 3', Fig. 1, to form a stop for the light ning-arrester. It. will be noticed that the free ends of springs p and g are at opposite ends of the lig htning-arrester m to provide spring-pressure on both ends of the arrester to firmly hold the parts thereof together. Each spring t is mounted on base a by bolt to and is adapted to engage a heat-coil s when same is in a set position, as shown in Figs. 1 and 2. The'lugs a u are preferably formed out of springs t 16, respectively. Spring 0 is mounted on base 'a by bolt 2, Fig: 4, the base a being cut away, as at 2 Figs. 1 and 2, to accommodate spring 0. All of the bolts h h, n-n, 2,7, to, and w are preferably inserted through the based from the bottom thereof and have their heads covered by an insulating-wax, as shown at bolt 2 in Fig. 4. The rib b and base a are preferably provided with holes t 'L, extending therethrough for mounting the protector to a suitable support.

The line conductors are preferably con-- nected to binding-posts h h, respectively, the conductors from the instrument or apparatus to be protected are connected to bindingposts to w, respectively, preferably passing through hole "L in base a, and the ground conductor is connected to binding-post 1",

. preferably passing through hole't' in base a. The circuit through one side of the'apparatus is from binding-post w, through spring 1., thermal protector 8, spring y, spring is, fuse c, and spring 9 to binding-post h, the circuit through the other side being similar.

The circuit through either lightning-arrester is from spring is, through the portion p of spring k,the carbon blocks and dielectric of the lightning-arrester, portion g of spring g and spring g, to binding-host r, and thence to ground. a

When a strong current comes in over a line conductor, it blows the fuse c, and thereby opens the circuit between the instrument to be protected and the line. When a sneak current comes in over a line conductor, it causes the thermal protector s to operate and take the position shown in Figs. 3 and 4, due to the tension in spring 2 thereby disconnecting spring t from spring y and grounding the latter against the ground-plate g. It will be seen that the operation of the thermal protector cuts the instrument to be protected from the line and connects the objectionable current to ground. A high-potential current coming in over the line arcs through the dielectric of the lightning-arrester to earth and is thereby diverted from the instrument to be protected. It will thus be seen that the instrument is protected from all classesof injurious currents and charges of electricity.

While I have shown and described particular types of fuses, heat-coils, and lightningarresters in this invention and particular details of construction, I do not wish to limit same to such particular protective devices or details.

in the circuit What I claim as my invention is 1. An arrangement of electrical protective apparatus comprising an insulating-base, a pair of fuses mounted parallel on the base, suitable spring clamping devices for the fuses adapted to automatically clamp same in place, a pair of lightning-arrestcrs mounted in line with the respective fuses, suitable contact-springs for the lightning-arresters, a pair of thermal protectors mounted in line with the fuses and lightning-arresters, suitable contact-springs for the thermal protectors, a rib of insulating material between the fuses and extending parallel therewith, a suitable cover for the thermal protectors and lightning-arresters, and means for connecting the apparatus as a protector for electrical apparatus, substantially as described.

2. An arrangement of electrical protective apparatus comprising an. insulating-base, a tubular fuse mounted horizontally on the base, suitable spring clamping devices for the fuse, a thermal protector mounted on the base in line with the fuse and in circuit therewith, suitable contact-springs for the thermal protector, a lightning-arrester mounted vertically on the base and in line with the fuse and thermal protector, a contact-spring and a ground-terminal for the lightning-arrester,.the contact-spring being connected to the circuit of the fuse and thermal protector and the ground-terminal being adapted to ground the circuit of the fuse when the thermal protector operates, and suitable connection-terminals for the circuit-conductors, substantially as described.

3. In apparatus of the, class specified, the combination of an insulating-base, a fuse, lightning-arrester, and thermal protector mounted in line on the base in the order men.- tioned, suitable contact-springs for the several protectors, the free ends of the contactsprings for the lightning-arrester being at respective opposite ends of the latter, the fuse being mounted so that when it is not in place the latter is opened for the entire length of the fuse, and'suitable connection-terminals for the several circuit-conductors, substantially as described. I

v 4. An arrangement of electrical protective apparatus, comprising .an insulating base, tubular fuses mounted horizontally on the base, suitablespring clamping evices for the fuses, thermal protectors mounted on the base in line with the respective fuses and in circuit therewith, suitable contact-springs for the thermal. protectors, lightning-arresters mounted vertically on the base and in line with the respective lines of fuses and thermal protectors, contact-springs and a ground-plate for the lightning-arresters, the contact-springs being connected to the respective circuits of the fuses and thermal protectors and the ground-plate being adapted to ground the circuits of the fuses when the mounted in duplicate thermal protectors operate, and suitable connectlon-termrnals for the circuit-conductors,

of the latter, the fuses being mounted so that when they arenot in place in the circuits the latter are opened for the entire lengths of the fuses, an insulating-rib between the fuses, suitable cover for the thermal protectors and lightning-arresters, and suitable connectionterminals for the several circuit-conductors, substantially as described.

As inventor-of the foregoing I hereunto subscribe my name, in the presence of two subscribing Witnesses, this 10th day of March 19G6;

FRANK B. oooK.

Witnesses FREDERICK R. PARKER, F. W. PARDEE. 

